23284-16-4 4-Thia-1-azabicyclo(3.2.0)heptane-2-carboxylic acid, 6-(2,6-dimethoxybenzamido)-3,3-dimethyl-7-oxo-, compd. with viomycin (3:1) Viomycin 2,6-dimethoxyphenylpenicillinate Viomycin, tris(6-(2,6-dimethoxybenzamido)-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo(3.2.0)heptane-2-carboxylate) (salt)